{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.101353.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/839470"}},{"@id":"https://doi.org/10.1103/PhysRevC.82.034909","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"STAR Collaboration"},"creator":{"@type":"Organization","name":"STAR Collaboration"},"datePublished":"2021","description":"Charged-particle spectra associated with direct photon ($\\gamma_{dir} $) and $\\pi^0$ are measured in $p$+$p$ and Au+Au collisions at center-of-mass energy $\\sqrt{s_{_{NN}}}=200$ GeV with the STAR detector at RHIC. A hower-shape analysis is used to partially discriminate between $\\gamma_{dir}$ and $\\pi^0$. Assuming no associated charged particles in the $\\gamma_{dir}$ direction (near side) and small contribution from fragmentation photons ($\\gamma_{frag}$), the associated charged-particle yields opposite to $\\gamma_{dir}$ (away side) are extracted. At mid-rapidity ($|\\eta|<0.9$) in central Au+Au collisions, charged-particle yields associated with $\\gamma_{dir}$ and $\\pi^0$ at high transverse momentum ($8< p_{T}^{trig}<16$ GeV/$c$) are suppressed by a factor of 3-5 compared with $p$ + $p$ collisions. The observed suppression of the associated charged particles, in the kinematic range $|\\eta|<1$ and $3< p_{T}^{assoc} < 16$ GeV/$c$, is similar for $\\gamma_{dir}$ and $\\pi^0$, and independent of the $\\gamma_{dir}$ energy within uncertainties. These measurements indicate that the parton energy loss, in the covered kinematic range, is insensitive to the parton path length.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.101353.v1/t1","@type":"Dataset","description":"The $z_{T}$ dependence of $\\pi^{0}-h^{\\pm}$ near side and away-side associated particle yields. The errors denoted 'syst' are systematic errors correlated...","name":"Figure 2"},{"@id":"https://doi.org/10.17182/hepdata.101353.v1/t2","@type":"Dataset","description":"The $z_{T}$ dependence of away-side associated-particle yields for $\\pi^{0}-h^{\\pm}$ triggers and $\\gamma_{dir}$ triggers. The errors denoted 'syst' are systematic errors...","name":"Figure 3 (upper panel)"},{"@id":"https://doi.org/10.17182/hepdata.101353.v1/t3","@type":"Dataset","description":"The $z_{T}$ dependence $I_{AA}$ for $\\pi^{0}-h^{\\pm}$ triggers and $\\gamma_{dir}$ triggers. The errors denoted 'syst' are systematic errors correlated in $z_{T}$....","name":"Figure 3 (lower panel)"},{"@id":"https://doi.org/10.17182/hepdata.101353.v1/t4","@type":"Dataset","description":"$I_{AA}$ as a function of $p_{T}$ for $\\gamma_{dir}$ triggers, measured in 0-10% Au+Au collisions. The associated charged particles have $z_{T}...","name":"Figure 4"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins839470?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/101353"}],"inLanguage":"en","name":"Studying Parton Energy Loss in Heavy-Ion Collisions via Direct-Photon and Charged-Particle Azimuthal Correlations","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins839470?version=1","version":1}